Method of and means for permanently waving hair



R."L. EVANS Dec. 27, 1932.

Original Filed Jan. 21,1932

ATTORNEYS siderable Patented Dec. 27, 1932 UNITED STATES PATENT OFFICE 5 M RALPH L. EVANS, OF NEW YORK, Y., ASSIGNOR TO ZOTOS CORPORATION,

OF NEW YORK, N. Y., A CORPORATION OF NEW YORK METHOD MEANS FOR PERMANENTLY WAVING HAIR Original application filed January 21, 1932, Serial No. 587,890.

September '22, 1932.

This invention relates to that class of hair waving in which a so-called permanent wave is imparted to a pro-formed tress of hair by subjecting the tress to the action of a heating chemical, such as calcium oxide, which, when moistened, will of heat to impart a permanent wave to the said tress.

This invention comprises a novel method of and a novel means for controllin the development of the heat generated y the self heating chemical wherein certain materials are used to extend the development of the heat over a longer period of time than could be done by theheating chemical itself.

I have found that the development of the heat may be extended successfully over a conperiod oftime by combining with the heating chemical a diluent, such as sand.

I have also found that the development of the heat may be extended successfully over a considerable period of time by combining with the heating chemical a substance, as for instance an ammonia compound which would emit a volatile gas, thereby removing the heat and keeping the temperature down.

It is to be understood that the heatlng chemical may be usedin its dry powdered state or that it may be pressed into easily friable cakes, in which case a suitable binder, such as dry glycerin, etc. may be used.

-An example of a hair waving pad embodying my invention is represented in the accompanying drawing in which:

ig. 1 represents an inside plan view of the pad in its unwrapped condition, the inner absorbent sheet being shown at the side of the pad and the inner wrapper sheet being shown unfolded;

Fig. 2 represents an inside plan view ,of the pad in its unwrapped condition after the inner wrapper flap has been perforated and the inner face of the chemical containing envelope has been perforated, the inner absorbent sheet being shown interposed between'the inner face of the heating chemical containing envelope and the inner wrapper flap;

Fig. 3 represents a itself generate suflicient side view of the pad wrapped around a wound tress as in use; and

Divided and this application filed Serial No. 634,290.

Fig. 4 represents a longitudinal central section through the wrapped pad.

The outer wrapper of the hair waving pad is denoted by -1 and is preferably made of non-absorbent material, as for instance paper. The inner wrapper is denoted by 2 and is preferably made of metal foil. wrapper is provided with a foldable flap 3.

n envelope 4 composed of a perforable impervious material, such asmetal foil, is attached to the inner face of the inner wrapper 2, which envelope contains a heating chemical, such as calcium oxide in powdere form, which chemical, when moistened, will of itself generate suflicient heat to impart a so called permanent wave to a pre-formed triiswhen enclosed within the pad.

n material, such as cotton fabric is arranged to be moistened and inserted between the flap 3 and the envelope 4 after the inner face of the envelope 4 and the folded over flap 3 of the inner Wrapper have been perforated. The pressing of the flap back into place will squeeze the moisture from ,the wetted inner sheet into the envelope containing the heating chemical.

In practice, the tress 6 is wound as usual around a mandrel 7 The tress may be moistened either before or after it is wound, by a suitable waving solution, such for instance as an ammonia solution. The inner'face of the impervious envelope 4 containing the hair waving chemical is and the folded over fla may be perforated att at 9. The inner sheet ter or by a suitable hair as that used for moistening the tress 6.

The self heating chemical within the envelope may be treated to produce the results hereinbefore set forth;

The pad is then wrapped around the preformed tress and is preferably secured in posit1on at the scalp end of the tress by a suitable scalp protecting guard of well known or approved form, such for instance as the self locking guard 10 shown in the accompanying drawing. The outer end of the pad may be secured around the mandrel 7, as for Softheinner wrapper e same time as shown 5 is'moistened by weperforated as shown at 8,

waving solution, such This inner inner removable sheet 5 of absorbent instance by twisting the outer wrapper of the pad around the same. The exothermlc action starts at once because of the application of moisture by the wetted inner sheet 5 of the pad to the self heating chemical through the perforations in the inner face of the impervious envelope. within the pad in order to impart a so called permanent wave to the pre-iormed tress without requiring application of heat from an outside source. Itwill be seen that the outside wrapper of the pad serves to confine the heat to a large extent within the pad,'the steam generated by the combination of the treating solution with the chemical being permitted to escape through the crimped outer end of the outer wrapper.

This application is a division of my copending application filed January 21, 1932, Serial No. 587,890, entitled Method of and means for permanently waving hair.

The method of and means for extending the development of the heat over a considerable period of time by combining a suitable medium with the moistening medium which was herein now forms the subject matter of my divisional application filed the 12th day of November, 1932, its

' serial number being 642,359.

What I claimis 1. Imparting'a permanent wave to hair by subjecting the hair to heat generated by the reaction of an exothermic material with a moistening medium, of the heat being extended over a considerable period of time, without raising its temperature, by combining a suitable mediumwith the exothermic material.

2. Imparting a permanent wave to hair by subjecting the hair to heat generated by the reaction of an exothermic material with a moistening medium, the natural development of the heat being extended over a considerable period of time without raising its tem pcrature, by combining a diluent with the exothermic material. 1

3. Imparting a permanent wave to hair by subjecting the hair to heat generated by the reaction of an-exothermic material with a moistening medium, the development of the heat being extended over a considerable period of time by combining sand with the moistening medium,

exothermic material.

4.. Imparting a permanent wave to hair by subjecting the hair to heat generated by the reaction of an exothermic material with a the natural development of the heat being extended over a considerable period of time without raising its temperature, by combining a salt with the exothermic material.

5. Imparting a permanent wave to hair by subjecting the hair to heat generated by the reaction of an exothermic material with \a moistening medium, the development oi the A regulable heat is then set up the natural development P heat being extended over a considerable period of time by combining ammonium sulphate with the exothermic material.

6. Imparting a permanent wave to hair by subjecting the hair to heat generated by the reaction of an exothermic material with a moistening medium, the development of the heat being extended over a considerable period oftime by combining an ammonia compound which will emit a volatile gas with the exothermic material.

7. Means for waving hair including a chemical which, when moistened, will generate sufiicient heat to imparta permanent wave to the hair, a material being combined with said heating chemical for extending the natural development of the heat over a considerable period of time without raising its temperature.

8. Means for waving hair including a chemical which, when moistened, will generate sufficient heat to impart apermanent wave to the hair, a diluent being combined with the heating chemical for extending the natural development of the heat over a considerable period of time without raising its temperature. A

9. Means for waving hair including a chemical which, when moistened, will generate suflicient heat to impart a permanent wave to the hair, sand being combined with the heating chemical for extending the development of the heat over a considerable eriod of time. l

'10. Means for waving hair. including a chemical which, when moistened, will generate suflicient heat to impart a permanent wave to the hair, a salt being combined with said heating chemical for extending the natural development of the heat over a considerable period of time without raising its temperature.

11. Means for waving hair including a chemical which, when moistened, will generate 'sufiicient heat to impart a permanent wave to the hair, ammonium sulphate being combined with said heating chemical for extending the development of the heat over a considerable period of time.

In testimony, that I claim the foregoing as m invention, Ihave signed my name this 19th day of September, 1932.

. RALPH L. EVANS. 

